Home
Class 12
PHYSICS
In an alpha -decay the Kinetic energy of...

In an `alpha` -decay the Kinetic energy of `alpha` particle is 48 MeV and Q-value of the reaction is 50 MeV. The mass number of the mother nucleus is :- (Assume that daughter nucleus is in ground state).

A

96

B

100

C

104

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
`K_(alpha) = (A-4)/(A) Q rArr 48 = (A-4)/(A) 50 rArr A = 100`
Promotional Banner

Topper's Solved these Questions

  • SIMPLE HARMONIC MOTION

    ALLEN|Exercise Exercise-02|19 Videos

  • SIMPLE HARMONIC MOTION

    ALLEN|Exercise Exercise- 3 Match The Column|1 Videos

  • SIMPLE HARMONIC MOTION

    ALLEN|Exercise SOME WORKED OUT EXAMPLES|29 Videos

  • RACE

    ALLEN|Exercise Basic Maths (Wave Motion & Dopplers Effect) (Stationary waves & doppler effect, beats)|24 Videos

  • TEST PAPER

    ALLEN|Exercise PHYSICS|4 Videos

Similar Questions

Explore conceptually related problems

In an alpha -decay, the kinetic energy of alpha -particles is 48 MeV and Q value of the reaction is 50 MeV . The mass number of the mother nucleus is (assume that daughter nucleus is in ground state)

In an alpha -decay, the kinetic energy of alpha -particles is 48 MeV and Q value of the reaction is 50 MeV . The mass number of the mother nucleus is (assume that daughter nucleus is in ground state)

In an alpha -decay, the kinetic energy of alpha -particles is 48 MeV and Q value of the reaction is 50 MeV . The mass number of the mother nucleus is (assume that daughter nucleus is in ground state)

The kinetic energy of alpha -particle emitted in the alpha -decay of ""_(88)Ra^(266) is [given, mass number of Ra = 222 u]

A nucleus of mass 220 amu in the free state decays to emit an alpha -particle . Kinetic energy of the alpha -particle emitted is 5.4 MeV. The recoil energy of the daughter nucleus is

A nucleus of mass 218 amu is in free state decays to emit an alpha -particle. Kinetic energy of alpha -particle emitted is 6.7Mev. The recoil energy in (MeV) emitted by the daughter nucleus is

The distance of the closest approach of an alpha particle fired at a nucleus with kinetic of an alpha particle fired at a nucleus with kinetic energy K is r_(0) . The distance of the closest approach when the alpha particle is fired at the same nucleus with kinetic energy 2K will be

A nucleus ""^(220)X at rest decays emitting an alpha -particle . If energy of daughter nucleus is 0.2 MeV , Q value of the reaction is

A stationary nucleus of mass 24 amu emits a gamma photon. The energy of the emitted photon is 7 MeV. The recoil energy of the nucleus is

A uranium nucleus ._(92)U^(238) emits and alpha -particle and a beta -particle in succession. The atomic number and mass number of the final nucleus will be

ALLEN-SIMPLE HARMONIC MOTION-Exercise-01
  1. The constant 'a' Mosely's law sqrt(v) = a(Z-b) for k(alpha)X-rays is r...

    Text Solution

    |

  2. Charateristic X-rays are not obtained in the spectrum of H-atom bacaus...

    Text Solution

    |

  3. For the decay of nucleus, the possible reason which is not true

    Text Solution

    |

  4. Assuming that 200MeV of energy is released per fission of uranium ato,...

    Text Solution

    |

  5. If the binding energy per nucleon in .(3)Li^(7) and .(2)He^(4) nuclei ...

    Text Solution

    |

  6. The mass of proton is 1.0073 u and that of neutron is 1.0087 u (u = at...

    Text Solution

    |

  7. The binding energy of deuteron is 2.2 MeV and that of H""(2)^(4)He is ...

    Text Solution

    |

  8. In an alpha -decay the Kinetic energy of alpha particle is 48 MeV and ...

    Text Solution

    |

  9. When a neutron is disintegrated, it has :-

    Text Solution

    |

  10. If N(t) = N(o)e^(lambdat) then number of disintegrated atoms between t...

    Text Solution

    |

  11. A radioactive element has half-life period of 30 days. How much of it ...

    Text Solution

    |

  12. The half life a radioactive element is 30 days, if the mass of the spe...

    Text Solution

    |

  13. In a mean life of a radioactive sample

    Text Solution

    |

  14. Atomic weight of a radioactive element is M(W) gm. Radioactivity of m ...

    Text Solution

    |

  15. Radioactive element decays to form a stable nuclide, then the rate of ...

    Text Solution

    |

  16. The probability of nucleus to decay in two mean lives is

    Text Solution

    |

  17. A sample of radioactive material decays simultaneously by two processe...

    Text Solution

    |

  18. Find the Q - value for the nuclear reaction: .(2)He^(4)+.(7)N^(14) r...

    Text Solution

    |

  19. Starting with a sample of pure ""^(66)Cu,(7)/(8) of it decays into Zn ...

    Text Solution

    |

  20. Consider the following energies :- 1. minimum energy needed to excit...

    Text Solution

    |